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Old 09-16-2010, 05:59 PM   #1
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Flow rate at reducer


I have a Sunmaxx Solar Water tank with G1 male fittings for hot out, cold in. The house piping to existing tank is 1 1/4". Leaving tank it is 1".
A (G1 x 3/4 NPT) is included with Solar tank. If I use the included fitting, and immediately expand from 3/4 back to 1", what kind of flow pressure effects will I experience.

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Old 09-16-2010, 09:07 PM   #2
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Flow rate at reducer


Not 100% sure about solar, but a standard tank is not considered a fixture, does not have fixture units, and does not significantly reduce flow/pressure. I'm thinking that unless you're using lots and lots of hot h20 somewhere, or the lines run a really long way to get to where they go, you probably won't notice the difference. Most faucets run just a couple gallons per minute, as do most showerheads. If you're really worried about it, and its still an option, then plumb the water lines to the fixtures larger (3/4" to each fixture branch, 1/2" just up to the fixture)

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Old 09-17-2010, 10:05 AM   #3
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Flow rate at reducer


Quote:
Originally Posted by SIDINC View Post
I have a Sunmaxx Solar Water tank with G1 male fittings for hot out, cold in. The house piping to existing tank is 1 1/4". Leaving tank it is 1".
A (G1 x 3/4 NPT) is included with Solar tank. If I use the included fitting, and immediately expand from 3/4 back to 1", what kind of flow pressure effects will I experience.
Your pressure drop will be minimal since the length of the 3/4" fitting is very short. Only if you are running long distances at 3/4" and bump back up to 1" will you see more of a pressure drop depending on the flow rate.
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